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Bearing 71934 ACD/P4A (SKF)

Angular contact ball bearings, super-precision 71934 ACD/P4A

Bearing number : 71934 ACD/P4A

Size (mm) : 170x230x28

Brand : SKF

Bore Diameter (mm) : 170

Outer Diameter (mm) : 230

Width (mm) : 28

Bearing dimensions and specification in SKF catalogue:

d - 170 mm

D - 230 mm

B - 28 mm

d₁ - 188.5 mm

d₂ - 188.5 mm

D₁ - 211.5 mm

r_1,2 - min. - 2 mm

r_3,4 - min. - 1 mm

a - 60.8 mm

d_a - min. - 179 mm

d_b - min. - 179 mm

D_a - max. - 221 mm

D_b - max. - 225 mm

r_a - max. - 2 mm

r_b - max. - 1 mm

d_n - 193.5 mm

Basic dynamic load rating - C - 124 kN

Basic static load rating - C₀ - 160 kN

Fatigue load limit - P_u - 4.8 kN

Limiting speed for grease lubrication - 5000 r/min

Limiting speed for oil lubrication - 7500 mm/min

Ball - D_w - 19.05 mm

Ball - z - 29

G_ref - 36 cm3

Calculation factor - e - 0.68

Calculation factor - Y₂ - 0.87

Calculation factor - Y₀ - 0.38

Calculation factor - X₂ - 0.41

Calculation factor - Y₁ - 0.92

Calculation factor - Y₂ - 1.41

Calculation factor - Y₀ - 0.76

Calculation factor - X₂ - 0.67

Preload class A - G_A - 800 N

Preload class B - G_B - 1600 N

Preload class C - G_C - 3200 N

Preload class D - G_D - 6400 N

Calculation factor - f - 1.3

Calculation factor - f₁ - 0.98

Calculation factor - f_2A - 1

Calculation factor - f_2B - 1.04

Calculation factor - f_2C - 1.08

Calculation factor - f_2D - 1.14

Calculation factor - f_HC - 1

Preload class A - 415 N/micron

Preload class B - 546 N/micron

Preload class C - 731 N/micron

Preload class D - 1002 N/micron

Mass bearing - 2.85 kg

Tags :  SKF , 170x230x28